Typographical machine.



R. 0. BOARDMAN.

TYPOGRAPHICAL MACHINE. APPLICATION FILED APR. 12. 191?.

l ,%?1 9 1 @& Patented July 2,1918.

' 2 SHEETS-SHEET R) i) R. 0. BO'ARDIVIAN.

TYPOGRAPHICAL MACHINE. APPLICATION FILED APR. [2. 1911.

Patented July 2, 1918.

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rrroenernronn ivrncnrnn Specification of Letters Patent.

Patented duly idle.

Application filed April 12, 1917. Serial No. 161,405.

To all whom it may concern:

Be it known that 1, ROBERT Orrs BOARD- MAN, a citizen of the United States, residing at Springfield,'in the county of Sangamon and State of Illinois, have invented certain new and useful Improvements in Typographical Machines, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention has reference to the keyboard and escapement mechanisms employed in commercial linotype machines for releasing matrices from the magazine wherein they are contained. The general organization of these machines is represented in U. S. Letters Patent to O. Mergenthaler No. 436,582, and the details of the parts to which my invention has special reference are shown in the Letters Patent to P. T. Dodge, No. 530,931. I

The escapements controllingthe discharge of matrices from the magazine'are actuated by vertical reeds operated by underlying yokes or levers each containing a cam which acts upon and receives rotary motion from an underlying constantly rotating rubber roll. The yokes are held normally with their cams at rest and out of contact with the rubber roll, and are released by finger key connections which permit them to fall so that the cams may frictionally engage with the driving roll and be rotated thereby to raise the yokes and operate the escapement reeds.

In practice, the life of the power driven rubber rolls is comparatively short as a result of the wear to which they are subjected by the repeated engagement therewith of the yoke cams which bear thereon with considerable pressure; in fact, oftentimes very decided grooves are cut into the rolls on account of this heavy pressure. In such circumstances, it becomes necessary to remove the worn roll and substitute a new one','thus adding to the expense and occasioning much inconvenience and loss of time. Tn addition, the rapid wear of the rolls gives rise to many other objections, a prominent one of which is the failure of the escapements to respond to the actuation of the finger keys,

" due to the insuflicient raising of the cam yokes. j

My invention is intended to obviate the foregoing dificulties and aims materially to prolong the life of thepower driven rolls.

To this end, specifically, ll mount the rolls so that they may be shifted axially or longitudmally to a slight extent to present new portions with which the yoke cams may engage, thus distributing the wear uniformly and progressively throughout the entire surface of the rolls. In one of the embodiments illustrated, this shifting of the rolls is effected automatically at definite periods, and in another, manually at the will of the operator.

In the accompanying drawings, I have shown my invention merely in preferred form andby way of example and as applied to a keyboard mechanism of standard construction, but it will be obvious that many changes and variations may be made there- 1n and in its mode of adaptation without departing from the spirit of the invention. Generally speaking, I desire it to be understood that I do not limit myself to any specific form or embodiment, except in so far as such limitations are-specified in the claims.

Referring to the drawings:

Flgure 1 is avertical section taken through the standard keyboard mechanism having my invention applied thereto;

Fig. 2 is an enlarged detail-view showing the mounting of one of the power driven rolls;

Fig. 3 is a section on the line 3-3 of Fig. l; v

Fig. 4: is a section on the line 4.4t of Fig. and i Fig. 5 is a detail-view of the manually operated means employed for shifting the roll.

The matrix releasing escapements (not shown) are actuated by the series of vertical reeds A which are constantly urged downward by the connected springs A The reeds A are supported in the framework above and out of contact with the in nor ends of the vertically swinging yokes or levers B, equipped with the rotary cams or eccentrics B which are operated by the underlying power driven rubber rolls C but which are normally held out of contact therewith by their engagement with the stop pins B The yokes B are pivoted at their outer ends to the framework and at their inner ends are normally supported upon the angular latches or dogs B controlled through the vertical rods B by the finger keys B, .When a finger key is actuated, the

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connected latch or dog B is withdrawn and the corresponding yoke B permitted to fall until its cam clears the stop pin B when it becomes engaged with the underlying roll G and is rotated thereby, causing the yoke to be .rocked upwardly about its pivot to raise the overlying escap'ement reed A against the action of its spring A to release the selected matrix. immediately resumes its first position so that as the yoke descends it is arrested by the dog and supported in its position of rest, the rotation of the cam B also being arrested by its rengagement with the stop pin B which maintains it out of contact with the roll C. The cam yokes are arranged in two series above the rubber rolls and extend to the right and left of .the eseapement reeds, the alternate ones of which are actuated by the yokes of one series, and the intermediate'ones by the yokes of the other series. The rolls G are provided with the supporting journals C rotatably mounted in bearings D at opposite sides of the framework. At the right, the journals of r the two rolls are connected together by the gearing C so as to cause the rollsto rotate in unison, such rotation being imparted thereto bythe pulley C attached to one of the journals and which receives motion through the connecting fbelt C from the constantly driven intermediate shaft 0. The parts so far described, except as hereinafter pointed out, may be of any well known or approved construction or such as illustrated in the Dodge patent before mentioned. I I 'f In carrying my invention into effect, the journals C of the two rolls C (unlike prior constructions) are mounted in the bearings D so as to be capable of'a slight endwise or axial movement with reference thereto, as indicated in Fig. 2, so as to permit the rolls to be shifted to the right and left alternately to bring different portions of their surfaces beneath the cams of the overlying series of yokes or levers B. In Fig. 2, one of the rolls is shown by the full lines in its rightmost position and has represented thereon the worn track of one of the yoke cams, which is usually roughened or toothed to prevent slipping. 'By shifting the roll to the left to the dotted line position shown, it can be seenthat a fresh portion of the roll surface'will be presented beneath the cam for engagement therewith. Any suitable means may be provided for efiecting this reverse shifting of the rolls, and in the present instance, I have illustrated two different embodiments to accomplish this purpose,.in one of which the shifting of the rolls is effected automatically and in the other manually at the will of the operator. 1 a j a .The automatic means illustrated comprise The dog B an upright lever E located between the rolls 0 and pivotally connected as at E to the upper end of a bracket member F secured to the fixed framework at the left or at the side remote from the driving means. A spring E acting on the lever above its pivot tends constantly to maintain its lower end in engagement with a rotatable face cam G also mounted upon the bracket member F and presenting alternate rises and depressions G and G respectively. Attached to the lever E below its pivot is a connecting plate I-I branching in opposite directions therefrom and having hook-shaped or slotted ends fitted over grooved portions C of the roll journals C whichare sufiiciently extended for that purpose. The plate H thus establishes a rigid connection between the lever E and the two cam rolls C so that the rocking of the lever in opposite directions by the stepped cam G effects the corresponding shifting of the rolls. Thus, as shown in Fig. 1, when the lower end of the lever E engages in one of the depressions G of the cam, the rolls are shifted to and maintained in their position to the right. When, however, the lower end of the lever engages one of the rises G of the cam, the rolls are shifted and maintained in their position to the left, (see the dotted lines in Fig. 1). In other words, the rotation of the cam G acts through the connections described to shift the cam rolls C alternately to the right andleft with refence to the overlying cam yokes, thus repeatedly bringing different portions of the rolls into position for operative engagement with the rotary cams of the yokes. It is pointed out that the shifting of the cam rolls does not interfere with their driving means which include the flexible connecting belt C.

The rotation of the cam G is effected by means of an attached ratchet wheel J, having as many teeth as there are rises and projections on the cam, and adapted to be rotated by a reciprocating pawl J The pawl J is carried by one arm of a pivoted bell crank lever J (mounted upon the bracket member F), whose other arm is connected by a link J to the lever K which latter forms a part of the operating connections for the usual assembling elevator K wherein the matrices are composed in line. As a result of this arrangement, when the elevator is raised for the transfer of a composed line, its operating lever K pulls the link J forwardly and rocks the bell crank lever J 2 about its pivot, lifting the pawl J and rotating the ratchet wheel J the distance of one tooth (see dotted lines in Fig. 3), bringing either a rise or depression of the cam into action according to the posi tion of the cam at the last movement of the elevator. The return of the elevator to its lower and normal position restores the pawl and the connected parts to their original or actuating position.

Fig. 5 illustrates the modified arrangement whereby the cam rolls are shifted manually instead of automatically. In this em bodiment, the, foregoing parts have been utilized, except that the actuating parts for the pawl J have been replaced by a pivoted hand lever L which now carries the pawl and which is adapted to be operated at the,

will of the operator. A spring L serves to restore the lever to its normal position after actuation.

As previously stated, I have shown my invention merely in preferred form and by way of example and as applied to a standard form of keyboard mechanism. .It will be understood, however, that many modifications and alterations will suggest themselves to those skilled in the art without departure from the scope of the invention. Thus, the shifting mechanism for the cam rolls may be varied in detail or in operation; or it may be applied to other kinds of keyboard mechanisms known in the art, 6. 9., those wherein the rotary cams are carried directly by the reeds which actuate the escapements, etc.

Having thus described my invention, its construction and mode of operation, what I claim and desire to secure by Letters Patent of the United States, is as follows 1. A keyboard mechanism including key selected actuating elements and a power driven operating roll therefor mounted to be shifted axially or longitudinally to difierent operative positions, for the purpose described.

2. A structure as specified in claim 1, in combination with means for effecting the shifting of the operating roll.

3. A structure as specified in claim 1, in combination with automatic means for effecting the shifting of the roll at predetermined periods.

4-. In a typographical machine, the com bination of a series of escapement actuating reeds, a power driven operating roll, rotary members adapted to be engaged by said roll for imparting movement to the actuating reeds, and finger keys controlling the engagement of the rotary devices with the operating roll, said roll being shiftable axially or longitudinally to different operative positions to present different portions of its surface in position for engagement with the rotary members.

5. A structure as specified in claim l, in

Copies of this patentinay be obtained for five cents each, by addressing the.

combination with means for effecting the shifting of the power driven operating roll.

6. A structure as specified in claim 4:, in combination with means for effecting the shifting of the power driven roll, the said means being actuated from a periodically operated part of the machine.

'Z'JA structure as specified in claim 6,

characterized by the fact that the periodically operated part of the machine therein referred to is the usual assembling elevator wherein the matrices are composed inline 8. A keyboard mechanism including key selected actuating elements and a power driven operating roll therefor mounted to be shifted axially. or longitudinally, in combination with means adapted by its repeated actuations to shift the operating roll alternately in opposite directions.

9. A keyboard mechanism including key selected actuating elements and a power driven operating roll therefor mounted to be shifted axially or longitudinally to diflerent operative positions, in combination with means adapted by its repeated actuations to shift the operating roll alternately in opposite directions, the said means comprising a pivoted lever connected to the operating roll, a rotary cam for rocking the lever in opposite directions, and devices for rotating the cam.

10. A keyboard mechanism including key selected actuating elements and a power driven operating roll therefor mounted to be shifted axially or longitudinally to different operative positions, in combination with means adapted by its repeated actuations to shift the operating roll alternately in oppo site directions, the said means comprising a pivoted lever connected to the operatingroll,

a rotary cam for rocking the lever in opposite directions, and pawl and ratchet mechanism for rotating the cam.

11. A keyboard mechanism including, in combination, a power driven operating roll, and a key-controlled rotary member adapted to be engaged with the roll, the said parts being shiftable, one relatively to the other longitudinally of the roll, to present different portions of the rolls surface in position for engagement with the rotary member.

In testimony whereof, I have aifixed my signature.

ROBERT OTIS BOARDMAN.

5 Washington, D. G.

Commissioner ct Retreats,

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